Add 21/15 and 6/81
1st number: 1 6/15, 2nd number: 6/81
21/15 + 6/81 is 199/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 15 × 27 = 405,
21/15 = 21 × 27/15 × 27 = 567/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
6/81 = 6 × 5/81 × 5 = 30/405 - Add the two like fractions:
567/405 + 30/405 = 567 + 30/405 = 597/405 - 597/405 simplified gives 199/135
- So, 21/15 + 6/81 = 199/135
In mixed form: 164/135
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